/usr/ is in ruby-net-telnet 0.1.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/net/
/usr/lib/ruby/vendor_ruby/net/telnet/
/usr/lib/ruby/vendor_ruby/net/telnet/version.rb
/usr/lib/ruby/vendor_ruby/net/telnet.rb
/usr/lib/ruby/vendor_ruby/net-telnet.rb
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/net-telnet-0.1.1.gemspec
/usr/share/doc/
/usr/share/doc/ruby-net-telnet/
/usr/share/doc/ruby-net-telnet/copyright
/usr/share/doc/ruby-net-telnet/changelog.Debian.gz
/usr/share/doc/ruby-net-telnet/README.md